Sand-mixer.



. v v mi I PATENTEb JUNE 19, 1906.

k W. G. STOGKHAM.

SAND MIXER.

APPLICATION FILED NOV. 10, 1904.

2 SHEETS-SHEET 1.

6mm, I I

a 1 UNITED STATES PATENT OFFICE,

WILLiAM e. STOOKHAM, OF PIQUa-oino.

.VSAND-MIXER.

Specification of Letters Patent.

Patented June '19, 1906.

/ Applicatiun filed Mamba 10,1904. Serial No. 232,238.

To all whom, it may concern:

Be it known that I, WIL IAM G. Sroox- HAM, a citizen of the UnitedStates, residing at Piqua, in the county of Miami and State of Ohio,have invented new and useful Improvements in Sand-Mixers, of which thefollowing is a specification.

In the preparation of sand in foundries for use in molding it is commonto work; the same by hand through the instrumentality of V a shovel orlike implement, which is manipulated to toss the sand and insure athorough 'working, mixing, or kneading thereof, so to speak, wherebyitis lightened, the ingredients blended, and a homogeneous mass assured.

This invention provides a machine which 'm'ay'be moved over the sand ormaterial to be worked-thrown in a pile or ridgeupon the floor or othersupport, said machine comprising- =a mixing or kneading device forworking "the material simultaneously with the travel of; the machinethereover, said mixing device {comprising elements which move thematerial back and forth at the same time with its movementin thedirection of travel of the machine, 1

' The invention contemplates propelling means andconnections between themixer driven at a higher rate of speed than the proandpropelling means,whereby both are simultaneously operated, the mixer being 1 pellingmeans.

. For a full description of the invention and the merits thereof andalso to acquire a' knowledge" of the details of construction of the,

means'for efiecting the result reference is to be had to the followingdescription and acv companying drawings.

While the invention may be adapted to different forms and conditions bychanges in the structure. and minor details without de art ing from thespirit or essential features t ereof, still the preferred embodiment isshown in the accompanying'drawings, in which Figure 1 is asidehelevation of a sand-cutter embodying the invention. Fi 2 is a rearend elevation of the device. ig. 3 is a detail viewof one of the pivotedarms for carrying the cutter-shaft. Fig. 4 is a ;trans= verse section ofthe mixing or kneading device on the line :10 a; of Fig. 2 looking intherection of the arrow.

55,. side bars 2, carrying at their rear. en

Referring to the drawings, 1 designates a frame comprising a, pair ofspaced $3,113,111? B'stu shafts or axles 3, on which are mountedforrotation transporting-wheels 4,-and at their I forward endsvertically uprising'bars -'or standards 5, having at their upper endsbear- I ings 6, in which a double-crank shaft 7 is j ournaled forrotation, said'sh'aft being provided with oppositely-extended crankportions8. e

Pivoted to the bars 2, as at 9, is'a pair of oppositely-disposedswinging members or arms 10, providedattheir rear endswith suitablebearings for the reception of a transverse rotary, shaft 11, havingfixed thereon adjacent its ends sprocket-pinions 12 for the. receptionof endlesschains 13, engaged with sprocket-Wheels 14, fixed onthecrank-shaft 7, there being also fixed upon said shaftsprooket-pinions 15, carrying chains 16-, en.-

gaged with sprocket-wheels 17, mounted upon the axles 3, and fixedlyenga ed with the ground-wheels 4 for driving the atter. Under crank-shat 7 is operated power will be trans mitted therefrom by the chains 16 tothe wheels 4 and through the medium 'of the chains 13 to the shaft 11,the relative sizes of the sprocket-wheels and pinions being such thatthe speed of rotation of the oundwheels comparative with that of thecrankshaft will bematerially reduced, while a high rate ofspeed will beim arted to the shaft 11 for a purpose which wi be more fullyhereinafter described.

this arran ement it will be seen that as the Carried by the shaft 11 forrotation therewith is a'mixing or kneading device consist readilypenetrate the sand'and their broad flat sides to act as paddles inl'lfting and toss-' ing the material. The blades of one'rotary thematerial is worked towardthe center and ridged in the rear of themachine, The.

s .member .01 wheel ares1milarlyincl1ned m an li' 'bpposite direction tothe blades of the otherrotary-member or wheel, with the result that texmotion thereto,

blsdes here ev staggered or alternate arrangementi, 6., the blades ofone member are locoted opposite the spaces between the blades of theother member, so that the blades of the two Wheels will alternately andsuccessively act upon the material, and in passing through the latterimpart a whirling or yer-- thereby rapidly and thoroughly breaking andseparating the sand. In practice when it is desired to position themachblc over a pile of sand to be treated the arms 10, which arenormally fsied in p0 cities by mcansoi pins (not shorm) inserts through.holes 21, are released and swung up- Ward, thereby elevating the shaft11 arid Wheels 18 to permit passage of the over the send. [lifter themachine has been iroperly positioned the Wheels are again .lowersd andthe arms fixed in place by means "m? the pins to thus permit of theblades acting upon the sand during rotation of the shaft Boring theoperation of the crank-shaft the cutter 7 shaft 11 will, as beforestated, be driven at e high rate of speed for-efiectingJ-a rapid cuttingand breaking of the sand 1 y the blades 20, While at the-same time thewheels 1 will be driven at a pro er and compcrstiyely slower rate ofspec for causing the machine to travel slowly over the pile of bacterialhem-w acted upon.

iorcgoing itis apparent that I produce esimplc compact device which maybersediiy operated and one which in prac tice will ciiicicntly erformits functions in the attain-merit of t sends in view, it being 7enderstood that minor changes in the details forth may resorted toWithout cleparte pinion fixed onsaid shaft, 2. c

from the spirit of the invention. Having thus described the invention,whet is claimed esnciv isi. In o device of the: class described,- a:Zrsme having trei'asportiii Wheels, a shaft scstained by the frame andopcratively con-- nected with and fordriying the transporting wheels, issecond shaft operatively connected with end driven bythe first-namedshaft, and cutting-blades carried by the second hioili u i in adevice-of the class described, a havingtrans orting-wheels, a rotaryelicit carried by the frame, a car conct l with end'for driving one of te transportirig-wheels, a chain connection between id gear andcrook-shaft a cutter-shaft, cutting-blades carried thereby, and a gearand cue-in c'onncc tiombctween the crank-shaft end m1 tter-shait fordrivin the latter.

in a device of the c ass described, a mine having transporting-wheels; acar fixcdiior rotation with one of" said whee s, a rotary creek-shaftsustained by the'frame, a ain traveling upon andconnccting'the gear andmice for driving the trerxsporting-Whcel cm the creole-elicit, s;cuttereheit, cuttingblades latter arm's pivota y connected plane ofmovement 0 seems carried thereby, a pinion fixed on the cuttershai't, agear fixed on the crank-shaft, and a chain operatively connecting thelatter gear and pinion, whereby the cutter shaft is driven from thecrank-shaft.

4. In a device of the class described, a frame haviu,transporting-wheels, a'cuttershaft carrie by the frame, cutting-bladescarried by the shaft, and a power-shaft sustained by the frame andoperatively connected with end for simultaneously driving both theground-wheels and cutter-shaft.

5. in. a device of the class described, a frame havingtransporting-wheels, arms pivotcd to the frame for verticalswingingmovemerit, a cutter-shaft carried by the arms 'for movementtherewith, cutting-blades on said shaft, e power-shaft, operativeconnections between the power-shaft and transporting Wheels and-alsobetween the power-shaft and 85 cuttershaft.

'6. In a device of the class described, a frame havintransporting-wheels, a pair of with the frame to swin in a verticalplane, a cutter-shaft carried y and for movcmentwith the arms, means fornormally firing the arms againw movement, cuttin blades carried b l theshaft, 'apowersha t sustained by the ame, and operative connectionsbetween thepowershaft and cutter-shaft for driving the latter.

I. In a device of the class described, -a frame havingtransporting-wheels, a shaft journalcdin. the frame, mechanism fordriving said shaft, and a pair of cutter members fixed upon and forrotation-with the shaft, said members each comprising arms radiatin 1from the shaft and blades attached to an' carried by the arms, saidblades being-a1 ran cdin pairs each pair formed from a single ength ofmateria bent'ad'acent its longitudinal center upon itself an the bladesof the res ective members being arranged in relative y staggeredrelation and spirally twistcd'irom end to end. i

8. A machine for Working sand or like matcrisl in bulk, thesamecomprising a frame, a mixing or kneading device mounted upon or carriedby the frameand comprising elements arranged to work the material in theplane of movement of the machine (Hid simultaneously back and forth toeiicctla blending and a ridging thereof, propelling means supporting thesaid frame, and actuating means for the mixin or kneading device andforthe'said prope ing means mounted upon the frame to admit of themachine being run backward and forward.

9. A machine for workin sand or like material in bulk, the same emodying a mixing or kneading device comprising blades altcrnatelyinclined in'op os1te directions to the the machine, and actuating meansfor said mixer or kneader to effeet at blending and Working of thematerial 150 by a combined fiosshmg and baok-and-forth movement thereofw ltho'ut scattering or spreading.

IOI 'Am'achine forworking sand or likema- 1 5 torial in bulk,-th'e samecomprising ajmixing J or kneading devicefimd means'for rotating said.devioe,'said rotary imixer comprising blades alfirnatlyjinclihod, i n'opposite -directio'ns lengthwise thereof to-simultanously a o toss thematefifial'hth o pl or xio of travel of the machino and moveit back andforth to eflect a thorough blending without Scattering or spreadingthereof.

In testimony whereof I afiix my signature inpresence of two witnesses.

WILLIAM Wjtnesses: I J. E. WHITLOGK,

v J.' W. Dorm.

G. STOCKHAM.

